Hatchway for elevators



(No Model.) 2 eeeeeeeeeeee 1. W. O. PREOK.

HATGHWAY FOR ELEVATORS.

No. 368,145. Patented Aug. 9, 1887.

(No Model.) 2 Sheets-Sheet 2.

W. O. FREGK.

HATGHWAY FOR ELEVATORS.

No. 368,145. Patented Aug. 9, 1887.

William CFreck.

W1 TJVESSES n PETiRS. Pholuliihwgraphur. Wahingiou. nu:v

UNITED STATES PATENT OFFICE.

\VILLIAM CHARLES FREOK, OF NEIV BEDFORD, ASSIGNOR OF ONEIIALF TO JOSEPH IIIRSH, OF COLUMBUS, OHIO.

HATCHWAY FOR ELEVATORS.

SPECIFICATION forming part of Letters Patent No. 368,145, dated August 9, 1887.

Application filedFebrnni-y17,1887. Serial No. 227.941. (No model.)

To aZZ whom it may concern.-

Be it known that I, IVILLIAM CHARLES FREoK, a citizen of the United States, residing at New Bedford, in the county of Coshocton and State of Ohio, have invented certain new and useful Improvements in Hatehways for Elevators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon,which form a part of this specification.

My invention relates to certain new and useful Improvements in devices for opening and closing the doors of hatchways, the object of my invention being to provide a means whereby when the elevator approaches the doors it will open the same, and after passing through the hatchway-opening will close the doors, said action being automatic and performed by the movement of the elevator platform or cage.

\Vith the above end in view my invention consists in the construction and combination of the parts, as will be hereinafter fully set forth, and specifically pointed out in the claims.

In the accompanying drawings,which illustrate my invention, Figure 1 is a plan view, partly in section, showing the doors of the hatchway closed. Fig. 2 is a vertical sectional view taken through the line a: :0 of Fig. 1. Figs. 3 and 4 are detail perspective views.

A and A refer to the posts or guides for the elevator or cage, which are provided on their inner sides with projecting portions a, which form guides for the elevator.

The hatchway proper, or opening at each floor through which the elevator passes, is provided with doors B and B, which are hinged to the floor, so as to swing upwardly upon the hinges, so as to leave the hatch way open; and these doors are provided at their edges adjacent to the post A with plates 0 and C, which engage with swinging arms attached to the operating mechanism, which is actuated by a rack-bar, b, which is secured to the frame of the cage so as to project over one side of the post A, so as to engage with suitable pinions, to convert the vertical movement of the cage into a rotary motion,which is carried by shafts to the arms which engage with the plates attached to the doors B and B.

The post A is provided above the hatchway with brackets c and c, brackets c 0 being also attached beneath the hatchway-opening to the post A. These brackets serve as supports for gear-wheels D, which are mounted on short stub-shafts (Z, and consist of pinions d and beveled cog-wheels (7,. At a point about on a line with the hatchway-opening the post A has attached thereto a grooved block, E, through which groove the rack-bar I) may pass, and this block, as well as the post A, is provided with a horizontal perforation, tl'iroiilgh which a horizontal shaft, G, passes, said shaft also passing through a U-shaped bearing or support, E, which is attached to the block E. This U shaped shaft-bearing supports the ends of the shafts F F, the opposite ends thereof being supported by the horizontal projecting ends of the brackets c c. The shafts F F are provided at their ends adjacent to the brackets c c with beveled cog-wheels f f, and adjacent to the U-shaped bracket or support E with cog-wheels f. Both of these cog-wheels f mesh with a beveled cog-wheel, g, which is rigidly attached to or fixed upon the horizontal shaft G. The horizontal shaft G, besides being supported centrally by the hearing attached to the block E, is also supported at its ends in bearings carried by plates or brackets h, which are suitably attached to the horizontal beam A. The shaft G also carries bev eled cog-wheels g.

The pinions or beveled cog or gear wheels hereinbefore' referred to are approximately of the same size and are each provided with the same number of teeth, and the gear-wheels are rigidly attached to their respective shafts.

The horizontal brackets h, hereinbefore referred to, have attached thereto brackets h, in which and the brackets It, just mentioned, are formed bearings for horizontal stub-shafts H, which carry beveled cog-wheels H, which mesh with the cog-wheels 9 attached to the shaft G. These cog-wheels are of a larger di ameter than those hereinbefore mentioned.

Rlgldly attached to the cog-wheels H, or

the shafts thereof, are arms I, the ends ofv which are provided with notches z, with which the plates engage; and these arms I are also provided with slots 13, which pass over the inwardly-proj ecting portions of the brackets h, wh ch are provided with vertical slots h, which permit said arms to lie parallel with the floor when the hatchway-doors are open. It will be noted that the shafts H are on a point or line with the pintle of the hinges ghlch connect the hatchwaydoors to the oor. The construction hereinbefore described is lntended to be employed when it is desired that the doors of the hatchway should, when open, lie parallel with the floor; and in some instances it is desired to have one hatchwaydoor parallel with the floor, while the other door remains in a nearly-vertical position, and to accomplish this end I provide one of the doors with a plate, 0, (see Fig. 3 and right side of Fig. 1,) beneath which is located a spr1ng, c, said plate being pivoted to the door; and adjacent to the shaft H is secured an upwardly-projecting plate, J, the major portion of the upper edge of which is curved, while the back portion is provided with a stop, j. When this construction is employed, the arm I will be slightly cut away on its under side, so as to reduce the depth of the notch i,- and when the hatchway-door 13 comes to nearly a vertical position the plate 0, having a spring movement upon its pivot, will ride upon the curved portion of the plate, so as to release the arm I out of the catch or slot and permit the arm to swing to a horizontal position, and when the arm moves so as to close the doors theprojecting portion adjacent to the notch 7/ W111 engage with the plate 0' and carry it beyond the vertical plate J, when it will spring into the notch therein and remain there while closing the door until the in contact with the plate J. J of this upright plate again comes The stop j of plate said inclination being from the hatchwayopening.

The operation of my invention is as follows: Supposing the hatchwaydoors to be closed and the cage beneath the same, when the cage is raised, the projecting rack-bar will engage with the lower pinion, d, so as to turn the same, which rotary movement is communlcated by the beveled gear-wheels d f f and shaft F to the horizontal shaft G through the cog-wheel g. The cog-wheel g, rotating with the shaft G and engaging with the cog-wheel H, will cause the arms I to turn upwardly serves to hold the door of the hatchway at a slightly-inclined position,

movement of the parts hereinbefore described, which results in closing the doors of the hatch way.

I am aware that prior to my invention it was not broadly new to provide an elevator with a rack-bar which engages fixed pinions,

having belts or other devices for sliding doors, so as to close the openings to a hatchway; also, that it has been proposed to provide pinions which are operated by the movement of the cage by belts to flexible connections for elevating the hatchway-doors upon their pivots, and I do not claim such as my invention, it being my purpose to dispense with belts or other connecting means which are liable to slip, and substitute positive-acting communicating means therefor.

I claim-- 1. The combination, with a hatchway having hinged doors carrying plates, a cage or elevator-car provided with a rack-bar, which projects therefrom, vertical shafts provided with pinions, with which the rack-bar engages, and gear-wheels, of a horizontal shaft suitably geared to the vertical shafts, and stubshafts geared to the horizontal shaft and provided with pivotally moving arms which engage with the plates projecting from the doors of the hatchway, substantially as shown.

2. The combination, with a hatchway having hinged doors carrying plates, of a cage or elevator-car provided with a projecting rackbar, short shafts provided with pinions, and gear-wheels mounted in bearings so as to be at right angles with the guideposts, shafts F F, geared to each other and to a horizontal shaft, G, said horizontal shaft having gearwheels which engage with the gear-wheels on stub shafts located on a line with the hinges of the hatchway-doors, said stub-shafts carrying arms which engage with projecting plates attached to the edges of the hatchwaydoors, substantially as shown, whereby the elevator or cage on its upward or downward passage will open and close the doors, substantially as shown, and for the purpose set forth.

3. The combination, substantially as set forth, of hatchwaydoors having plates projecting from one edge, the cage or car provided with a projecting rack-bar, the pinions, vertical shafts, and horizontal shafts geared together, and cog-wheels journaled in line with the hinges of the doors and provided with arms to engage the plates of the doors.

4. The combination of a hatchway having hinged doors, a cage, and mechanism, substantially such as described, controlled by the cage for operating the doors, a notched arm, I, a spring-pressed plate pivoted to the door, and an upwardly-projecting plate, J, provided with a curved upper edge and a stop.

ICO

5. The combination, with a hatchway havbar, pinions on a line with the supportingpost, with whichsaid rack-bar engages, inde- In testimony whereof I affix my signature in pendent shafts F F, geared to each other and presence of two witnesses.

to the horizontal shaft G pinions G oog 7 w Y wheels H, mounted on short shafts, aihns I, v ILLIAM CHALLES FRECIL adapted to move with said shafts and pro Vitnesses: vided with notches i and 2?, and brackets pr0- I. D. LUKE, vided with slots h, substantially as shown, S. B. KnRsTETER,

and for the purpose set forth. 

